Adjustable support for electric sockets



June 27, 1933. M. GUETT ADJUSTABLE. SUPPORT FOR ELECTRIC SOCKETS Filed April 11, 1931 II I l 30 f AIIIIIIIII a R OGn T m vmfi mN 0.5 b 7 Patented June 27, 1933 UNITED STATES PATENT OFFICE MONROE GUETT, OF HARTFORD, CONNECTICUT, ASSIGNOR-TO THE ARROVJ-HART &

EEGEMAN ELECTRIC COMPANY, OF HARTFORD, CONNECTICUT, A

CONNECTICUT e at the proper height for whatever size candle shell is used.

Another object is to simplify the construction and manufacture of the means to secure an adjustable candle socket hickey in a predetermined position.

In the drawing Figure 1 is an elevation view of a candle socket support made according to my invention. v

Figure 2 is an enlarged plan view of the strut used in Figure 1, shown in cooperation with the slidable supporting members of the device.

Figure 3 is an elevation section view with the section taken on line 33 of Figure 2, of the form of my invention as shown in Figures 1 and 2.

Figure 4 is an enlarged elevation view of another form of strut.

Figure is an enlarged sectionview of my invention with the section taken on line 5-5 of Figure 4. I

Figure 6 is an enlarged plan View of the clamp used with the strut shown in Figures 4 and 5.

Figure 7 is an enlarged side elevation view of the upper portion of one of the legs of the lower supporting member of the hickey.

Figure 8 is an enlarged plan view, similar to Figure 2, of a modified form of strut.

Referring to the drawing a conventional electric lamp socket 10, such for example as is shown in the Nero Patent 1,77 8,684, patented October 14 1930, is supported on chanf; nel shaped legs 12 which may or may not be CORPOBATION OF ADJUSTABLE SUPPORT FOR. ELECTRIC SOCKETS Application filed April 11, 1931.

Serial ,No. 529,488.

mined position of adjustment on legs 16, I provide a strut which is adapted to press the upper legs 12 outward against the lower legs 16 as an adjustment member is manipulated. A preferred form for the strut 20 is shown clearly in Figure 2. The strut is stampedfrom sheet metal to form symmetrical enlarged ends 22 connected by a thin double barred central portion hereinafter more particularly described. In each end portion U-shaped openings 24 are formed to slidably receive the legs 12, 16.

To hold the strut 20 at the upper ends of the leg 16, tongues 26 are formed on the strut in the openings 24 for extension into rectangular apertures 28 (see Fig. 7) in the upper ends of the legs 16. The legs 16 are sulfi ciently resilient and have sufiicient play in the openings 24, before thellegs 12 are slid into those openings, to allow the strutto he slid upon the legs 16 and the tongues 26 lodged in the apertures 28. 1 When the tongues are lodged in apertures 28 the legs 12 may he slid on the legs 16 through the openings-24. Ordinarily the width of the central portion of the openings 24 and combined widths of the central portions of the legs 12 and-16 are approximately equal so that'the legs 12 may slide upon the legs 16 but will prevent the tongues 26 of the strut from mov- 1 ing out of the 'apertures'28 in legs 16.

Two arms 30 are bent down from the central portion of the strut on opposite sides thereof and perpendicular to the plane of the strut. These arms are apertured and one aperture is internally screw threaded. An adjustment screw 32 is passed through the aperture of the other arm and screwed into the threaded aperture. The central portion of the strut is recessed as at 34, thus forming two spaced bars 36 connecting the two en'- l-arged end portions 22 of the strut. The recess 34 is preferably substantially diamond shaped, that is widest'in the middle and tapering towards each end so that as the screw 32 is tightened the screw head bearing on one of the arms 30 and the screw thread pulling the other arm inward will cause the bars 36 to move toward one another. Due to the peculiar shape given the bars 36 by the diamond-shaped aperture 34 the movement of the bars toward one another tends to straighten out the sides of the aperture and hence elongate it.v This is accompanied by a corresponding tendency of the inner edges 25 of the apertures 24 to bow outwardly against the legs 12 thus pressing them against the legs 16 and holding the whole fixedly in position. The bowed position of inner edges of the apertures 24 is shown in an exaggerated manner in dotted lines in Figure 2.

From the foregoing it can be seen that the strut operates on the principle of a toggle mechanism. a

In Figures 4, 5, and 6 another form of my invention is shown, The strut in this form is like that just described except that the arms 30 are eliminated and a clamp 40 is substituted for them to perform their functions.

This clamp is U-shaped, the free ends of its arms 42 having lateral extensions 3. The clamp embraces the double barred central portion of the strut and is supported from the upper face thereof by the extensions resting on that face. A transverse adjusting screw passes freely through an aperture in one of the arms 42 and engages in the screw threaded aperture of the other arm. When the screw 32 is tightened it will clamp the two bars 36 and move them together in the same manner as in the strut hereinbefore described. Thus in both forms shown my invention operates on the toggle principle.

A desirable feature of my invention is the ease with which the adjusting screw may be approached and tightened with a screw driver, by reason of the fact that the screw extends transversely of the plane of the hickey.

In Figure 8, I have shown a modified form of strut which, although not as desirable as the form shown in Fig. 2 ,is nevertheless within the scope of my invention. In this form the end portions of the strut are recessed, as at 24", to form openings similar to openings 24 of Figure 2. The strut is still further recessed, as at 34, connecting the openings 24 and forming two bars 36a, 36b. The bar 36?) is much narrower and more subject to bending than the thicker, more rigid bar 36a, due to the side of the strut next the bar 36?) being cut away as shown. Arms 30a, 30?) similar to arms 30 in Figure 2 are bent down at the center of the strut and apertured for reception of a screw threaded adjustment member 32 as hereinbefore described.

If desired the bar 366 and arm 306 may be severed as at 37, but whether or not this severance is done, the head of the screw 32, when the screw is threaded through the arms 30a, 306 will press against arm 30?) and cause certain portions 25 of the strut around the openings 2a to press against the slidable members 12 and hold them and slidable members 16 fixedly in position.

Modifications within the scope of my invention will occur to those skilled in the art. Therefore I do not limit my invention specifi cally to. the forms shown.

I claim V 1. The combination with an electric lamp socket of supporting means comprising a plurality of members slidable longitudinally with one another, a strut engaging with said members and having a pair of toggle bars, and an adjustment member for moving said bars to clamp said members fixedly in position.

2. The combination with an electric lamp socket of supporting means comprising a plurality of members slidable longitudinally with one another, a strut engaging with said members and having a pair of toggle bars, and an adjustment member for moving said bars to clamp said members fixedly in position, said adjustment member extending transversely to the plane of movement of said supporting means.

3. The combination with an electric lamp socket of supporting means comprising a plurality of members slidable longitudinally with one another, a strutengaging with said members and having a pair of toggle bars, an adjustment membc arms extending in planes substantially perpendicular to the plane of said strut and engaged by said adjustment member for clamping said slidable members fixedly in position.

4. The combination with an electric lamp socket of supporting means comprising a plurality of members slidable longitudinally with one another, a strut engaging with said members and having a pair of toggle bars, an adjustment member and means extendin in planes substantially perpendicular to the plane of said strut andsubstantially parallel to the plane of movement of said supporting means and engaged by said adjustment member for clamping said slidable members fixedly in position.

5. The combination with an electric lamp socket of supportin means comprising a plurality of meml ers slidable longitudinally with one another, a strut engaging with said members and having a pair of toggle bars. a pair of clamping arms acting on said bars and extending approximately perpendicularly to the plane of said strut, and an adjustment member engaging said arms for clamping said slidable members fixedly in position.

6. The combination with an electric lamp socket of supporting means comprising a plurality of members slidable longitudinally with one another, a strut engaging with said members and having a pair of toggle bars, a pair of arms bent substantially normal to the plane of said strut, and an adjustment member engaging said arms for moving said bars and clamping said slidable members fixedly in position.

7. The combination with an electric lamp socket of supporting means comprisingv a plurality of members slidable longitudinally with one another, a strut engaging with said members and having a pair of toggle bars, a clamp having portions engaging said bars, and an adjustment member cooperating with said clamp to hold said slidable members fixedly in position.

8. The combination with an electric lamp socket, of supporting means comprising a plurality of members slidable longitudinally with one another, a strut engaging with said members and having a pair of toggle bars, a U-shaped clamp having arms engaging said bars, and an adjustment member engaging said arms for clamping said slidable members fixedly in position.

9. The combination with an electric lamp socket of supporting means comprising a plurality of members slidable longitudinally with one another, a strut engaging with said members, said strut having a central aperture, a pair of arms, and an adjustment member engaging said arms for securing said slidable members fixedly in position.

10. The combination with an electric lamp socket of supporting means comprising a pluralit-y of members slidable longitudinally with one another, a strut cooperating with said members, said strut having means engaging with one of said members to locate it relative to one of said members, said strut also having an aperture, a pair of arms and an adjustment member engaging said arms for securing said slidable members fixedly in position.

11. The combination with an electric lamp socket of supporting means comprising a plurality of members slidable longitudinally with one another, a centrally apertured strut cooperating with said members, an adjustment member and a pair of arms engaged by said adjustment member and cooperating with said strut for securing said slidable members fixedly in position.

12. The combination with an electric lamp socket of supporting means comprising a plurality of members slidable longitudinally with one another, a centrally apertured strut cooperating with said members, a clamp cooperating with said strut, and an adjustment member engaging with said clamp for securing said slidable members fixedly in position.

13. A strut for an adjustable electric light socket support, comprising a centrally recessed plate having enlarged ends and a contracted central portion, said ends having openings for the reception of the socket support, arms on opposite sides of the central recess bent perpendicularly to the plate, and being engageable by an adjusting member.

I 14. A strut for an adjustable electric light socket support, comprising a centrally recessed plate having enlarged ends and a contracted central portion, said ends having openings for the reception of the socket support, said central recess being substantially wider at the central portion of the strut than at its ends, whereby upon exertion of pressure transversely of said contracted central portion the dimensions of certain portions of said end openings will be diminished.

15. A strut for an adjustable electric light socket support, comprising a centrally recessed plate having enlarged ends and a contracted central portion, said ends having openings for the reception of the socket support, in combination with a clamp adapted to engage the plate on opposite sides of the central recess, and an adjustment member for causing said clamp to exert pressure on said central portion. v

16. A strut for an adjustable electric light socket support, comprising a centrally recessed plate having enlarged ends and a contracted central portion, said ends having openings for the reception of the socket support, said central recess being substantially wider at the central portion of the strut, in combination with a clamp engaging the plate on opposite sides of the central recess, and an adjustment member, said adjustment member being adapted to cause said clamp to exert pressure on said strut.

17. A strut for an adjustable electric light socket support comprising a plate having recesses for slidable members in its end portions certain portions of the plate around said recesses being adapted to press against said members, said plate having, also, a portion of reduced section adjacent to its center, in com bination with an adjustment member cooperating with said reduced portion to cause said certain portions to press against said members to hold them fixedly in position.

18. A strut for an adjustable electric light socket support, comprising a plate having recesses for slidable members, certain portions of the plate around said recesses being adapted to press against said members, and a pair of arms bent normal to the plane of the plate, in combination with an adjustment member engaging with said arms, for causing said portions to press against said members and hold them fixedly in position.

19. A strut for an adjustable electric light socket support, comprising a plate having recesses for slidable members, certainv portions of the plate around said recesses being adapted to press against said members, in combination with a clamp and an adjustment member, cooperating with said clamp, for causing said portions to press against said members and hold them fixedly in position. v

In testimony whereof I have signed my name to this specification. I

MONROE GUETT. 

